package com.atguigu.gulimall.product.service.impl;

import com.alibaba.fastjson.TypeReference;
import com.atguigu.common.utils.R;
import com.atguigu.gulimall.product.entity.SkuImagesEntity;
import com.atguigu.gulimall.product.entity.SpuInfoDescEntity;
import com.atguigu.gulimall.product.feign.SeckillFeignService;
import com.atguigu.gulimall.product.service.*;
import com.atguigu.gulimall.product.vo.ItemSaleAttrVo;
import com.atguigu.gulimall.product.vo.SeckillInfoVo;
import com.atguigu.gulimall.product.vo.SkuItemVo;
import com.atguigu.gulimall.product.vo.SpuItemBaseAttrGroupVo;
import org.bouncycastle.cms.PasswordRecipientId;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.util.List;
import java.util.Map;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ThreadPoolExecutor;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;

import com.atguigu.gulimall.product.dao.SkuInfoDao;
import com.atguigu.gulimall.product.entity.SkuInfoEntity;
import org.springframework.util.StringUtils;


@Service("skuInfoService")
public class SkuInfoServiceImpl extends ServiceImpl<SkuInfoDao, SkuInfoEntity> implements SkuInfoService {
    @Autowired
    private SkuImagesService imagesService;
    @Autowired
    private SpuInfoDescService descService;
    @Autowired
    private AttrGroupService groupService;
    @Autowired
    private SkuSaleAttrValueService skuSaleAttrValueService;
    @Autowired
    ThreadPoolExecutor executor;
    @Autowired
    private SeckillFeignService seckillFeignService;
    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<SkuInfoEntity> page = this.page(
                new Query<SkuInfoEntity>().getPage(params),
                new QueryWrapper<SkuInfoEntity>()
        );

        return new PageUtils(page);
    }

    @Override
    public void saveSkuInfo(SkuInfoEntity skuInfoEntity) {
        this.baseMapper.insert(skuInfoEntity);
    }

    @Override
    public PageUtils queryPageByCondition(Map<String, Object> params) {
        /*
        key:
        catelogId: 0
        brandId: 0
        min: 0
        max: 0
         */
        QueryWrapper<SkuInfoEntity> wrapper = new QueryWrapper<>();
        String key = (String) params.get("key");
        if(!StringUtils.isEmpty(key)){
            wrapper.and(w->{
                w.eq("sku_id",key).or().like("sku_name",key);
            });
        }
        String brandId = (String) params.get("brandId");
        if(!StringUtils.isEmpty(brandId)&&!"0".equalsIgnoreCase(brandId)){
            wrapper.eq("brand_id",brandId);
        }
        String catelogId = (String) params.get("catelogId");
        if(!StringUtils.isEmpty(catelogId)&&!"0".equalsIgnoreCase(catelogId)){
            wrapper.eq("catalog_id",catelogId);
        }
        String min = (String) params.get("min");
        if(!StringUtils.isEmpty(min)){
            wrapper.ge("price",min);
        }
        String max = (String) params.get("max");
        if(!StringUtils.isEmpty(max)){
            try {
                BigDecimal bigDecimal = new BigDecimal(max);
                if(bigDecimal.compareTo(new BigDecimal(0))==1) {
                    wrapper.le("price",max);
                }
            } catch (Exception e){

            }


        }
        IPage<SkuInfoEntity> page = this.page(
                new Query<SkuInfoEntity>().getPage(params),
                wrapper
        );

        return new PageUtils(page);
    }

    @Override
    public List<SkuInfoEntity> getSkusBySpuId(Long spuId) {
        List<SkuInfoEntity> infoEntities = this.list(new QueryWrapper<SkuInfoEntity>().eq("spu_id", spuId));
        return infoEntities;
    }

    @Override
    public SkuItemVo item(Long skuId) throws ExecutionException, InterruptedException {
        SkuItemVo skuItemVo = new SkuItemVo();

        CompletableFuture<SkuInfoEntity> infoFuture = CompletableFuture.supplyAsync(() -> {
            //1.sku基本信息  pms_sku_info
            SkuInfoEntity info = getById(skuId);
            skuItemVo.setInfo(info);
            return info;
        }, executor);
        CompletableFuture<Void> saleAttrFuture = infoFuture.thenAcceptAsync((res) -> {
            Long spuId = res.getSpuId();
            Long catalogId = res.getCatalogId();
            //3.spu销售属性组合
            List<ItemSaleAttrVo> itemSaleAttrVos = skuSaleAttrValueService.getSaleAttrsBySpuId(spuId);
            skuItemVo.setSaleAttr(itemSaleAttrVos);
        }, executor);

        CompletableFuture<Void> descFuture = infoFuture.thenAcceptAsync((res) -> {
            Long spuId = res.getSpuId();
            Long catalogId = res.getCatalogId();

            //4.获取spu介绍信息 pms_spu_info_desc

            SpuInfoDescEntity desc = descService.getById(spuId);
            skuItemVo.setDesc(desc);
        }, executor);

        CompletableFuture<Void> baseAttrFuture = infoFuture.thenAcceptAsync((res) -> {
            Long spuId = res.getSpuId();
            Long catalogId = res.getCatalogId();


            //5.获取spu的规格参数信息

            List<SpuItemBaseAttrGroupVo> groups = groupService.getAttrGroupWithAttrsBySpuId(spuId, catalogId);
            skuItemVo.setGroupAttrs(groups);
        }, executor);

        CompletableFuture<Void> imagesFuture = CompletableFuture.runAsync(() -> {
            //2.sku图片信息 pms_spu_images
            List<SkuImagesEntity> images = imagesService.getImagesBySkuId(skuId);
            skuItemVo.setImages(images);
        }, executor);

        //3.查询sku是否参与秒杀优惠
        CompletableFuture<Void> seckillInfoFuture = CompletableFuture.runAsync(() -> {
            R r = seckillFeignService.getSkuSeckillInfo(skuId);
            if(r.getCode()==0){
                SeckillInfoVo data = r.getData(new TypeReference<SeckillInfoVo>() {
                });
                skuItemVo.setSeckillInfo(data);
            }

        }, executor);


        //等待所有任务都完成，返回
        CompletableFuture.allOf(imagesFuture,saleAttrFuture,descFuture,baseAttrFuture,seckillInfoFuture).get();

        return skuItemVo;

    }



}